[Man in the condition of weightlessness (author's transl)].
In the space flights by the USA and USSR to date adequate experience has been obtained on the adaptation of man to living conditions in space--with the technical assistance of an artificial protective atmosphere in the space ship or space suit--and to the singular factor of "weightlessness" (microgravity, low gravity) and how he re-adjusts again after returning to a gravitational field. There is no ultimate or absolute physiological barrier for long term space flight--with one exception: decalcification of the skeleton. For short space flights, however, space sickness is a serious disorder.
D000222:Adaptation, Physiological; D001810:Blood Volume; D001842:Bone and Bones / Q000378:metabolism*; D002128:Calcium Metabolism Disorders / Q000209:etiology*; D003649:Decalcification, Pathologic / Q000209:etiology*; D006801:Humans; D007866:Leg / Q000098:blood supply; D008297:Male; D009133:Muscular Atrophy / Q000209:etiology; D011827:Radiation; D013909:Thorax / Q000098:blood supply; D014893:Weightlessness
Der Mensch im Zustand der Schwerelosigkeit Physiologische Probleme, klinische Aspekte, Vorbeugung und Schutzmassnahmen.